CN209261937U - Pile hammer hydraulic control system - Google Patents
Pile hammer hydraulic control system Download PDFInfo
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- CN209261937U CN209261937U CN201822131428.6U CN201822131428U CN209261937U CN 209261937 U CN209261937 U CN 209261937U CN 201822131428 U CN201822131428 U CN 201822131428U CN 209261937 U CN209261937 U CN 209261937U
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Abstract
The utility model discloses a kind of pile hammer hydraulic control system, including hydraulic cylinder, the hydraulic cylinder is differential hydro cylinder, which is at least communicated with a set of hydraulic directio control loop；The hydraulic directio control loop includes hydraulic pump, the oil outlet of hydraulic pump and to P mouthfuls of pressure oil port of the lower cylinder chamber and two position three way directional control valve that are connected to the hydraulic cylinder, the A mouth of two position three way directional control valve leads to the upper cylinder half chamber of hydraulic cylinder, and the oil return inlet T mouth of two position three way directional control valve is connected to fuel tank；The P hydraulic fluid port of control valve is connected to the oil outlet of hydraulic pump, and the T hydraulic fluid port of control valve is connected with fuel tank, and the A hydraulic fluid port of control valve is connected with two position three way directional control valve one end control chamber, and the B hydraulic fluid port of control valve is connected with the other end control chamber of two position three way directional control valve.The hydraulic cylinder is communicated with mutually independent 1-3 set hydraulic directio control loop.The pile hammer hydraulic control system fast response time, is able to achieve the quick commutation of hydraulic cylinder.
Description
Technical field
The utility model relates to a kind of piling machinery for architectural engineering foundation construction more particularly to a kind of differential type liquid
Press the hydraulic directio control loop system of pile hammer.
Background technique
Pile foundation is a kind of basic shape for being widely used in the architectural engineerings such as ocean engineering, skyscraper, bridge and high-speed rail
Formula, pile foundation is generally made of the cushion cap of the stake and undertaking superstructure that are set in soil, and the effect of stake is to build on top
The load for building object is transmitted on the biggish soil layer of depths bearing capacity, or squeezes soft layer, to improve the bearing capacity of soil
And compactness, to guarantee the stability of building and reduce settlement of foundation.
Piling machinery is then the necessary equipment by stake injection stratum to reinforce foundation capability；Existing piling machinery master
There are oscillatory type, static pressure type and paddle type mill piling machinery.Since static pressure pile-sinking machine needs huge ballasting weights, thus static pressure is heavy
Stake can not be suitable for the piling construction of large-scale foundation pile；And vibrohammer overcomes the ability of pile top end resistance weaker, especially works as base
Stake tip size is larger, and vibration hammer is difficult to overcome end resistance and realize pile sinking.So the piling construction of large-scale foundation pile is often only
Paddle type mill piling machine can be used to carry out operation.
Existing paddle type mill piling machine mainly has diesel hammer and hydraulic hammer.Diesel pile hammer can not be solved due to its own structure
The problems such as noise certainly, vibration and fume pollution and be gradually prohibited from using；Also due to diesel pile hammer thermal capacitance product and efficiency
Limitation, the jump bit core quality of maximum diesel hammer also can only achieve 15 tons theoretically, not be able to satisfy applying for large scale prefabricated stake
Work requirement.Hydraulic pile hammer then have the characteristics that piling is high-efficient, noise low vibration is small, without fume pollution, it is advanced
It is widely recognized as, Japan, Korea Spro in western developed country and Asia imperative with hydraulic pile hammer diesel oil substitute pile hammer
The countries and regions such as state, Hong Kong and Singapore, hydraulic pile hammer completely instead of diesel pile hammer, become piling market
Absolutely main force.But existing hydraulic pile hammer is since the through-current capacity of hydraulic control circuit is small, and the pressure loss is big, oil rub resistance ability
Weak, action sensitivity is not high, and that there are impact velocitys is low, response speed is slow, the single hammer action time is long and poor structure rigidity
The deficiencies of, the hydraulic pile hammers of these structures with blow speed and blow energy raising, inevitably in hydraulic cylinder
Back pressure is formed in oil pocket, blow energy and speed are restricted, and it is even thousands of to be equally difficult to meet the hundreds of kilojoules of large-scale foundation pile
The blow energy requirement of kilojoule.
In order to improve the blow energy of hydraulic peening hammer and the through-current capacity and response speed of hydraulic control circuit, the applicant
The utility application of " the guide rod type pile hammer with hydraulic cartridge valve ", patent Shen are proposed on October 24th, 2017
Please number: 201711003379.1.The hydraulic directio control loop of the utility model application includes that pilot control valve and two insert
Valve is filled, work structuring and working principle constitute single-acting hydraulic impact pile hammer, and pile monkey hammer core is beaten in a manner of freely falling body
Hit pile body；When mentioning hammer the pressure oil of hydraulic pump under the control of pilot control valve oil liquid through the first inserted valve and the second inserted valve with
Certain pressure value is filled into the cavity of resorption of hydraulic cylinder and realizes and mention hammer.It is opened again due to first to close the second inserted valve when mentioning hammer
The sequentially linkage of first inserted valve, two inserted valves will form more spool actuation time, and especially the second inserted valve is closed
When its working chamber and control chamber two sides oil pressure it is almost equal, insert valve core movement only rely on reset spring in valve come it is real
It is existing, the flowed friction of system and limited spring force, so that the slow movement of the inserting valve core, opening and closing time are longer.In addition
Hydraulic pump to entire control loop will carry out pressurising to set up and mention hammer oil pressure and can postpone the practical opening and closing of inserted valve again when mentioning hammer
Time, when this, which proposes hammer process, can consume more work.The first inserted valve is then first closed when dropping hammer, then opens second
Inserted valve.It will form the longer inserted valve switching motion time in each strike for mentioning hammer, dropping hammer, so that entire hydraulic system
The slow striking frequency of response speed it is low.Although therefore this single-acting guide rod type pile hammer has guiding performance good, increasing can be passed through
Staking hammer hammer core weight improves blow energy, but its hydraulic control circuit response speed is slow, when the work in each strike period
It is long, it is difficult to realize that high-frequency is driven piles, influence the raising of pile foundation construction efficiency.
Based on above-mentioned deficiency, the applicant proposes " the big energy pile hammer hydraulic control system of high frequency on March 30th, 2018 again
The utility application of system ", number of patent application: 201810291946.6.Hydraulic cylinder in the utility model application is adopted
Cylinder structure is covered with differential type, to constitute double acting pile hammer hydraulic control system, but its hydraulic directio control loop is same
It is main including there are two inserted valves.The second inserted valve is closed when mentioning hammer, and the first inserted valve is opened, and the pressure oil of hydraulic pump is direct
It is filled with the straight-bar chamber of hydraulic cylinder；The second inserted valve is opened when strike, and the first inserted valve is closed, and hydraulic cylinder constitutes differential company at this time
Take back road, this structure is conducive to improve striking frequency and blow speed, but its hydraulic control circuit is still by pilot valve and more
The control valve group that a main valve is constituted, needs the linkage of multiple main valves to switch, not only increases the complexity of oil circuit when being commutated,
The reliability of transmission system is reduced, and multistage switching increases the time of commutation action, so that response speed is slack-off, it is each
Commutation action cycle duration is still longer, is still difficult to realize the substantially speed-raising of striking frequency, limits pile hammer hydraulic control
The development of system Xiang Genggao striking frequency and higher strike energy position.
Hydraulic pile hammer will realize that there is the hydraulic control of big flow, quick response to return for high-frequency and high strike energy demand
The support on road and hydraulic pump, with the continuous improvement of hydraulic pile hammer blow energy and striking frequency, common hydraulic control is returned
Road has been difficult to meet the needs of high-volume hydraulic pile hammer, and excessive flow system flow can not only bring manufacturing cost and use at
This raising can also be such that system temperature rise gets higher, failure increases.
Utility model content
For deficiency present in prior art, the technical problem to be solved by the utility model is to provide one kind to beat
Pile monkey hydraulic control system is not only able to achieve the operation of system big flow, but also fast response time, is able to achieve the fast quick change of hydraulic cylinder
To.
In order to solve the above-mentioned technical problem, the pile hammer hydraulic control system of the utility model, including hydraulic cylinder, the liquid
Cylinder pressure is differential hydro cylinder, which is at least communicated with a set of hydraulic directio control loop；The hydraulic directio control loop packet
Hydraulic pump is included, the oil outlet of hydraulic pump and to the pressure oil for lower the cylinder chamber and two position three way directional control valve for being connected to the hydraulic cylinder
P mouthfuls of mouth, the A mouth of two position three way directional control valve leads to the upper cylinder half chamber of hydraulic cylinder, and the oil return inlet T mouth of two position three way directional control valve is connected to oil
Case；The P hydraulic fluid port of control valve is connected to the oil outlet of hydraulic pump, and the T hydraulic fluid port of control valve is connected with fuel tank, the A hydraulic fluid port of control valve
It is connected with two position three way directional control valve one end control chamber, the B hydraulic fluid port of control valve and the other end control chamber of two position three way directional control valve
It is connected.
In above-mentioned pile hammer hydraulic control system, due to using single two-position three way to change in hydraulic directio control loop
The commutation that hydraulic cylinder is controlled to valve shortens the port valve path of hydraulic oil, simplifies control loop structure, and increasing circuit can
By property, the port valve path of hydraulic oil is shortened, the time-consuming of each action process in hydraulic system is greatly saved, is reduced hydraulic
The commutation response time of system, be advantageously implemented pile hammer quickly mentions hammer and strike of quickly dropping hammer, and avoids because more insert
Valve sequentially acts and postpones the response time of hydraulic system, so that commutation action reaction is become faster, effectively improves pile monkey hydraulic pressure system
The response speed of system；Two-position three way commutation can be directly driven by the hydraulic oil of system using two position three way directional control valve simultaneously
The commutation of valve core shifts, and spool displacement thrust is powerful, and spool shifts reliable, fast response time rapidly；It is changed using two-position three way
Bring due to more inserted valves sequentially act is also avoided to valve to malfunction, and realizes the accurate of reversal valve control action, because
This not only substantially increases the response speed of hydraulic system element and the strike frequency of pile monkey using single two position three way directional control valve only
Rate, and the structure of hydraulic system is enormously simplified, reduce the valve number in hydraulic system, reduces operation troubles.And due to
Using two position three way directional control valve convenient for constituting differential hydraulic system, when pile monkey mentions hammer, high pressure oil caused by hydraulic pump is direct
The lower cylinder chamber of hydraulic cylinder is entered, hydraulic cylinder upper cylinder half chamber oil return is passed straight back in fuel tank again, oil inlet and oil return smooth channel, is moved
It shortens as the time, fast response time；When pile monkey drops hammer and drives piles, the lower cylinder chamber and upper cylinder half chamber of hydraulic cylinder are commutated by two-position three way
Valve and be interconnected to form differential connection, the oil return that the flow of upper cylinder half chamber fills into addition to the fuel feeding of hydraulic pump, there are also lower cylinder chamber,
The oil liquid of the fuel feeding of hydraulic pump and lower cylinder chamber, which merges together, flows to upper cylinder half chamber, and flow increases, so that piston driving piston rod is fast
Speed declines and drops hammer.Differential connection is formed by the downward hydraulic thrust of differential hydro cylinder upper cylinder half chamber simultaneously and pile monkey gravity is formed and closed
Power keeps the hitting power of pile monkey hammer core bigger, and not only blow energy becomes larger, and reciprocating motion speed is fast, also improves the strike of pile monkey
Frequency.Due also to the utility model can mostly cover the hydraulic directio control loop being connected with hydraulic cylinder, Lai Zengjia by setting
The oil inlet quantity of hydraulic cylinder oil liquid, relative reduction list cover hydraulic directio control loop flow, thus realize the big flow of hydraulic cylinder,
The relative size flow of hydraulic directio control loop.The circulation of hydraulic cylinder disengaging oil on the one hand can both be significantly increased in this way
Amount to improve the blow energy of hydraulic pile hammer, and can be beaten according to the actual needs that pile monkey is constructed come regulation and control pile monkey
Hit energy；On the other hand the circulation that can reduce control loop again, can not only reduce the circuit resistance of control loop, improve back
Road response speed and operating frequency, and control loop oil liquid temperature rise can be effectively reduced, improve blow efficiency.It is adopted in the utility model
The driving Hydraulic Elements for using differential hydro cylinder to be promoted and fallen as pile hammer hammer core can greatly improve the commutation speed of hydraulic cylinder
Degree shortens commutating period, increases hitting power and obtains advantage, frequently commutates especially suitable for big flow, high speed, HI high impact are this
It is used in pile hammer.
Preferred embodiments of the present invention, the hydraulic cylinder are communicated with mutually independent 1-3 set hydraulic directio control
Circuit.Every set hydraulic directio control loop is corresponding with a hydraulic pump.Hydraulic control circuit setting can be hydraulic cylinder rationally
Biggish hydraulic oil through-current capacity is provided, is conducive to the blow energy for improving pile hammer, realizes the enlargement of pile hammer.
Preferred embodiments of the present invention, the two position three way directional control valve are hydraulic directional valve, and the control valve is
Two-position four-way solenoid directional control valve.The hydraulic cylinder is double acting hydraulic cylinder with double piston rods or two-action single-rod hydraulic cylinder.It should
Structure not only commutates reliable rapid, but also has bigger blow energy, and can be selected according to actual condition different hydraulic
Flow system flow.
The further embodiment of the utility model, the lower piston rod extension end of the hydraulic cylinder and the hammer core phase of pile hammer
Connection.Connection is reliable, is easy to implement and proposes hammer and strike of dropping hammer.
Preferred embodiments of the present invention, the oil outlet of the hydraulic pump are connected to the A hydraulic fluid port of inserted valve, inserted valve
B hydraulic fluid port and to the P hydraulic fluid port for the oil outlet and two position three way directional control valve for being connected to hydraulic pump, the P hydraulic fluid port and hydraulic cylinder of inserted valve
Upper cylinder half chamber connection.The inserted valve control chamber of the inserted valve is connected with inserted valve working chamber.The structure can effectively slow down
Pile monkey hits impact of the moment huge strike effect to hydraulic system, is effectively protected hydraulic system and hydraulic component.
Preferred embodiments of the present invention, the oil outlet of the hydraulic pump are communicated with high pressure accumulator, and described two
The oil return inlet T mouth of three-way diverter valve is communicated with oil-return accumulator.Can not only steady hydraulic system oil pressure, absorb high-pressure pulsating, and
And hydraulic cylinder increase blow energy is given when dropping hammer and hitting.
Preferred embodiments of the present invention, the oil outlet of the hydraulic pump are also communicated with bypass accumulator and overflow
Valve bypasses accumulator between hydraulic pump and overflow valve.Be conducive to steady hydraulic system oil pressure, guarantee the normal of hydraulic system
Work.
Detailed description of the invention
The utility model pile hammer hydraulic control system is described further with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of structural schematic diagram of specific embodiment of the utility model pile hammer hydraulic control system；
Fig. 2 is the structural schematic diagram of the utility model pile hammer hydraulic control system another kind specific embodiment；
Fig. 3 be another specific embodiment of the utility model pile hammer hydraulic control system structural schematic diagram,
In figure, 1-hydraulic pump, 2-check-valves, 3-bypass accumulators, 4-overflow valves, 5-inserted valve working chambers, 6-
Inserted valve control chamber, 7-inserted valves, 8-two position three way directional control valves, 9-high pressure accumulators, 10-oil-return accumulators, 11-controls
Valve processed, 12-fuel tanks, 13-cylinder bodies, 14-upper piston rods, 15-upper cylinder half chambers, 16-pistons, 17-lower cylinder chambers, 18-lower pistons
Bar.
Specific embodiment
Pile hammer hydraulic control system as shown in Figure 1, the hydraulic cylinder in the hydraulic control system is differential hydro cylinder, poor
Hydrodynamic cylinder pressure includes cylinder body 13 and slidably supported in the piston 16 in cylinder body 13, is connected separately in the two sides up and down of piston 16
The both ends of upper piston rod 14 and lower piston rod 18, upper piston rod 14 and lower piston rod 18 are protruding；Piston in cylinder body 13
16 upsides form upper cylinder half chamber 15, cylinder chamber 17 under being formed on the downside of the piston 16 in cylinder body 13；The lower end of lower piston rod 18 and piling
The hammer core of hammer is connected, and proposes hammer and strike of dropping hammer to realize.Hydraulic pump 1 uses Variable plunger pump, in order to adjust flow system flow
With pressure.The inlet port of hydraulic pump 1 is connected to fuel tank 12, and the oil outlet of hydraulic pump 1 is through check-valves 2 and to being connected under hydraulic cylinder
P mouthfuls of pressure oil port of cylinder chamber 17 and two position three way directional control valve 8.The oil return inlet T mouth of two position three way directional control valve 8 is connected to fuel tank 12, should
The A hydraulic fluid port of two position three way directional control valve 8 leads to the upper cylinder half chamber 15 of hydraulic cylinder.The P hydraulic fluid port of control valve 11 and the oil outlet of hydraulic pump 1 connect
Logical, the T hydraulic fluid port of control valve 11 is connected with fuel tank 12, the A hydraulic fluid port of control valve 11 and one end control chamber of two position three way directional control valve 8
It is connected, the B hydraulic fluid port of control valve 11 is connected with the other end control chamber of two position three-way valve 8, to pass through the hydraulic of hydraulic system
Oil drives and controls the spool of two position three way directional control valve secondly sliding between a position.
It is also communicated with bypass accumulator 3 and overflow valve 4 in the oil outlet of hydraulic pump 1, bypass accumulator 3 is located at hydraulic pump 1
Between overflow valve 4.Inserted valve 7, the A of the oil outlet of hydraulic pump 1 and the inserted valve 7 are also communicated in the oil outlet of hydraulic pump 1
Hydraulic fluid port is connected, the B hydraulic fluid port of inserted valve 7 and to the P hydraulic fluid port for the oil outlet and two position three way directional control valve 8 for being connected to hydraulic pump 1, inserts
The P hydraulic fluid port of dress valve 7 is connected with the upper cylinder half chamber 15 of hydraulic cylinder, and 7 inserted valve control chamber 6 of inserted valve is connected with inserted valve working chamber 5
It is logical.When piling when pile monkey and foundation pile severe impact, the 15 oil pressure moment of upper cylinder half chamber of hydraulic cylinder increases and pushes open the valve of inserted valve 7
Core makes upper cylinder half chamber 15 be connected with the lower cylinder chamber 17 of hydraulic cylinder and plays buffer protection function.Hydraulic pump 1 oil outlet also simultaneously
To being communicated with high pressure accumulator 9, which steady high-pressure oil passage pulsation and can improve the blow energy of pile monkey,
Oil-return accumulator 10 is also communicated in the oil return inlet T mouth of two position three way directional control valve 8.Above-mentioned accumulator 10 is all made of bladder accumulation of energy
Device.
When work starts, starting hydraulic pump 1 and gradually by after oil pressure is raised to certain value in hydraulic system first, by control valve
11 spools, which move to, mentions hammer position, is filled into the lower cylinder chamber 17 of hydraulic cylinder from the pressure oil that 1 oil outlet of hydraulic pump pumps out at this time, hydraulic
The oil liquid of cylinder upper cylinder half chamber 15 is then through the A hydraulic fluid port of two position three way directional control valve 8, and the T hydraulic fluid port being connected to A hydraulic fluid port is back to fuel tank,
The piston 16 in hydraulic cylinder body 13 is pushed up at this time, and the piston 16 pushed away on this drives lower piston rod 18 and its is attached thereto
Pile monkey hammer core be lifted up.When pile monkey hammer core reaches highest setting position, 11 spool of control valve moves to position of dropping hammer, at this time
The upper cylinder half chamber 15 of hydraulic cylinder is connected to through two position three way directional control valve 8 with lower cylinder chamber 17 and constitutes differential hydraulic circuit, and pile monkey hammers core into shape
Strike of dropping hammer is realized under the down thrust of hydraulic cylinder and the double action of self gravity.Pile monkey is hammered core into shape and is implemented after hitting to stake,
Control valve 11, which then moves to, mentions hammer position, and the pressure oil that hydraulic pump 1 pumps out is pumped into cylinder chamber under hydraulic cylinder again, to push hydraulic cylinder
Piston and piston rod drive pile monkey to hammer core upward sliding into shape, and to drop hammer next time, strike is prepared.It so repeats, the cunning of control valve 11
Movable valve plug is constantly moved back and forth two operating positions, and realize pile monkey mention hammer or piling of dropping hammer.It controls in such a configuration
Valve 11 processed is two-position four-way solenoid directional control valve, and two position three way directional control valve 8 is then the two position three way directional control valve that surges.
The guide frame that its pile monkey hammers core into shape can both use guide rod type pile hammer structure, i.e. pile monkey hammer core is slidably supported in leading
On bar, hammers core into shape and moved back and forth under the action of hydraulic cylinder along guide rod and realize and mention hammer and piling；It is also possible to be oriented to using cartridge type
The hammer core guide part of structure, cartridge type not only can be cylindrical shape, can also be the cylinders tubular structure such as square tubular.
Fig. 2 is the structural schematic diagram of pile hammer hydraulic control system another kind specific embodiment, the piling of the embodiment
Hammer hydraulic control system possesses two sets of mutually independent hydraulic directio control loops, every equal Fig. 1 institute of set hydraulic directio control loop
Show that embodiment is identical.Every set hydraulic directio control loop is connected with hydraulic cylinder, and every set hydraulic directio control loop is also distinguished
It is corresponding with a hydraulic pump 1, which is also Variable plunger pump.
Fig. 3 is the structural schematic diagram of another specific embodiment of pile hammer hydraulic control system, the piling of the embodiment
Hammer hydraulic control system equally possesses two sets of hydraulic directio control loops.With above-described embodiment the difference is that: two sets of liquid
Direction control circuit is pressed to provide hydraulic oil by same hydraulic pump, i.e. hydraulic pump oil outlet and to being connected to the control of each set hydraulic directio
Circuit, each hydraulic directio control loop that covers are respectively communicated to hydraulic cylinder again.
The above-mentioned some preferred embodiments for having enumerated the utility model, but the utility model is not limited to above-mentioned implementation
Example, without prejudice to the utility model basic principle there are many more modifications and variations.Such as pile hammer hydraulic control system
System can not only possess a set of or two sets of hydraulic directio control loops, can also possess the hydraulic directio control of three set or more set
Circuit, every set hydraulic directio control loop can also can respectively cover hydraulic directio and control back respectively by corresponding hydraulic oil pump feed
Route a hydraulic oil pump feed；Hydraulic cylinder both can be double acting hydraulic cylinder with double piston rods, be also possible to double acting single-piston rod liquid
Cylinder pressure.The buffer structure that inserted valve 7 is constituted, can also use other common hydraulic system buffer structures；Hydraulic pump both can be with
It is variable pump, is also possible to constant displacement pump.These transformation and improvement are each fallen in the protection scope of the utility model.
Claims (10)
1. a kind of pile hammer hydraulic control system, including hydraulic cylinder, it is characterised in that: the hydraulic cylinder is differential hydro cylinder, should
Hydraulic cylinder is at least communicated with a set of hydraulic directio control loop；The hydraulic directio control loop includes hydraulic pump (1), hydraulic pump
(1) oil outlet and to P mouthfuls of pressure oil port of the lower cylinder chamber (17) and two position three way directional control valve (8) that are connected to the hydraulic cylinder,
The A mouth of two position three way directional control valve (8) leads to the upper cylinder half chamber (15) of hydraulic cylinder, and the oil return inlet T mouth of two position three way directional control valve (8) is connected to
Fuel tank (12)；The P hydraulic fluid port of control valve (11) is connected to the oil outlet of hydraulic pump (1), the T hydraulic fluid port of control valve (11) and fuel tank (12)
It is connected, the A hydraulic fluid port of control valve (11) is connected with two position three way directional control valve (8) one end control chamber, the B hydraulic fluid port of control valve (11)
It is connected with the other end control chamber of two position three way directional control valve (8).
2. pile hammer hydraulic control system according to claim 1, it is characterised in that: the hydraulic cylinder is communicated with mutually solely
1-3 vertical set hydraulic directio control loops.
3. pile hammer hydraulic control system according to claim 1, it is characterised in that: every set hydraulic directio controls back
Road is corresponding with a hydraulic pump (1).
4. pile hammer hydraulic control system according to claim 1,2 or 3, it is characterised in that: the two-position three way commutation
Valve (8) is hydraulic directional valve, and the control valve (11) is two-position four-way solenoid valve.
5. pile hammer hydraulic control system according to claim 1,2 or 3, it is characterised in that: the hydraulic cylinder is double cropping
With hydraulic cylinder with double piston rods or two-action single-rod hydraulic cylinder.
6. pile hammer hydraulic control system according to claim 1, it is characterised in that: the lower piston rod of the hydraulic cylinder
(18) extension end is connected with the hammer core of pile hammer.
7. pile hammer hydraulic control system according to claim 1, it is characterised in that: the oil outlet of the hydraulic pump (1)
It is connected to the A hydraulic fluid port of inserted valve (7), the B hydraulic fluid port of inserted valve (7) and to the oil outlet and two-position three way for being connected to hydraulic pump (1)
The P hydraulic fluid port of reversal valve (8), the P hydraulic fluid port of inserted valve (7) are connected to the upper cylinder half chamber (15) of hydraulic cylinder.
8. pile hammer hydraulic control system according to claim 7, it is characterised in that: the inserted valve of the inserted valve (7)
Control chamber (6) is connected with inserted valve working chamber (5).
9. pile hammer hydraulic control system according to claim 1, it is characterised in that: the oil outlet of the hydraulic pump (1)
It is communicated with high pressure accumulator (9), the oil return inlet T mouth of the two position three way directional control valve (8) is communicated with oil-return accumulator (10).
10. pile hammer hydraulic control system according to claim 1, it is characterised in that: the oil outlet of the hydraulic pump (1)
It is also communicated with bypass accumulator (3) and overflow valve (4), bypass accumulator (3) is located between hydraulic pump (1) and overflow valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131428.6U CN209261937U (en) | 2018-12-19 | 2018-12-19 | Pile hammer hydraulic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131428.6U CN209261937U (en) | 2018-12-19 | 2018-12-19 | Pile hammer hydraulic control system |
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| CN209261937U true CN209261937U (en) | 2019-08-16 |
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ID=67560356
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| CN201822131428.6U Active CN209261937U (en) | 2018-12-19 | 2018-12-19 | Pile hammer hydraulic control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160949A (en) * | 2019-12-06 | 2021-01-01 | 无锡市汉为液压气动有限公司 | Explosion-proof high-efficiency hydraulic pile hammer control system and pile driving method thereof |
| CN116164010A (en) * | 2023-04-26 | 2023-05-26 | 临工重机股份有限公司 | Control method and control system of hydraulic pile hammer and pile driver |
-
2018
- 2018-12-19 CN CN201822131428.6U patent/CN209261937U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160949A (en) * | 2019-12-06 | 2021-01-01 | 无锡市汉为液压气动有限公司 | Explosion-proof high-efficiency hydraulic pile hammer control system and pile driving method thereof |
| CN116164010A (en) * | 2023-04-26 | 2023-05-26 | 临工重机股份有限公司 | Control method and control system of hydraulic pile hammer and pile driver |
| CN116164010B (en) * | 2023-04-26 | 2023-07-21 | 临工重机股份有限公司 | Control method and control system of hydraulic pile hammer and pile driver |
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